我在进行一个web开发,想用jsp调用后台hibernate类对数据库操作,但是老是失败,请问怎么回事:前台jsp页面:
Login.jsp
<%@ page language="java" import="java.util.*" pageEncoding="gb2312"%>
<%@ page isErrorPage="True"%><%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'Login.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<%--/Home_Auto_Sys_2/src/Servlet.Login--%>
<body>Welcome to use HAS system:
<FORM action="Login_ok.jsp" method="post">
<P align="center">
用户ID : <INPUT type="text" name="UserID"></P>
<P align="center">
用户名称:<INPUT type="text" name="UserName"> </P>
<P align="center">用户密码:<INPUT type="password" name="Password"> </P>
<P align="center"><INPUT type="Submit" name="Submit" value="提交" />
<INPUT type="Reset" name="Reset" value="重置"/></P>
</FORM>
</body>
</html>
Login.jsp
<%@ page language="java" import="java.util.*" pageEncoding="gb2312"%>
<%@ page isErrorPage="True"%><%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'Login.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<%--/Home_Auto_Sys_2/src/Servlet.Login--%>
<body>Welcome to use HAS system:
<FORM action="Login_ok.jsp" method="post">
<P align="center">
用户ID : <INPUT type="text" name="UserID"></P>
<P align="center">
用户名称:<INPUT type="text" name="UserName"> </P>
<P align="center">用户密码:<INPUT type="password" name="Password"> </P>
<P align="center"><INPUT type="Submit" name="Submit" value="提交" />
<INPUT type="Reset" name="Reset" value="重置"/></P>
</FORM>
</body>
</html>
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<%@ page language="java" import="java.util.*" pageEncoding="gb2312"%>
<%@ page import="java.sql.*"%>
<%@ page import="java.util.Iterator"%>
<%@ page import="DB.Hibernate.*"%>
<%@ page import="org.hibernate.*"%>
<jsp:useBean id="userBean" scope="page" class="DB.Hibernate.User.Insert_User"/><%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'Login_ok.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
This is my JSP page. <br>
<%!
//userBean=new Customer();
String UserID=null;
String UserName=null;
String Password=null;
int loginAttempt=1;
String[] a=new String[10];
%>
<%
UserID=request.getParameter("UserID");
UserName=request.getParameter("UserName");
Password=request.getParameter("Password");
a[0]=UserID;
a[1]=UserName;
a[2]=Password;
try{
userBean.Insert_User(a);
}catch(Exception ex){}
if (loginAttempt==0){
out.println(loginAttempt);
}else{
out.println(loginAttempt);
}
%>
<%out.println(request.getParameter("UserID"));%>
<%out.println(request.getParameter("UserName"));%>
<%out.println(request.getParameter("Password"));%>
<FORM action="" method="post">
<P align="center">
用户ID : <INPUT type="text" name="UserID"></P>
<P align="center">
用户名称:<INPUT type="text" name="UserName"> </P>
<P align="center">用户密码:<INPUT type="password" name="Password"> </P>
<P align="center"><INPUT type="Submit" name="Submit" value="提交" />
<INPUT type="Reset" name="Reset" value="重置"/></P>
</FORM>
</body>
</html>
import org.hibernate.Session;
import org.hibernate.Transaction;import DB.HibernateSessionFactory;public class Insert_User { public Insert_User() {
super();
// TODO Auto-generated constructor stub
} public int Insert_User(String[] User){
int i=0;
User user=new User();
UserId userid=new UserId();
userid.setUserId(User[0]);
userid.setUserName(User[1]);
user.setPassword(User[2]);
user.setPrivilege(User[3]);
user.setEmail(User[4]);
user.setPhone(User[5]);
user.setStatus(User[6]);
user.setDescription(User[7]);
user.setId(userid);
//message.setMsg("Hello Hibernate");
try{
Session session=HibernateSessionFactory.currentSession();
Transaction tx = session.beginTransaction();
session.save(user);
tx.commit();
System.out.println("Save successful.");
i=0;
}catch (HibernateException e){
System.out.println("Save failed.");
i=1;
}finally{
try{
HibernateSessionFactory.closeSession();
i=1;
}catch (HibernateException el){
i=1;
}
}
return i;
}
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Insert_User a=new Insert_User();
String[] b=new String[10];
b[0]="c";
b[1]="b";
b[2]="a";
a.Insert_User(b);
}}
HTTP Status 500 - --------------------------------------------------------------------------------type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception javax.servlet.ServletException: org/hibernate/HibernateException
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:249)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause java.lang.NoClassDefFoundError: org/hibernate/HibernateException
java.lang.Class.getDeclaredConstructors0(Native Method)
java.lang.Class.privateGetDeclaredConstructors(Class.java:2357)
java.lang.Class.getConstructor0(Class.java:2671)
java.lang.Class.getConstructor(Class.java:1629)
org.apache.jasper.compiler.Generator$GenerateVisitor.visit(Generator.java:1218)
org.apache.jasper.compiler.Node$UseBean.accept(Node.java:1116)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2213)
org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2219)
org.apache.jasper.compiler.Node$Root.accept(Node.java:456)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
org.apache.jasper.compiler.Generator.generate(Generator.java:3270)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:189)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:286)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:267)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:255)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:556)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:293)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.9 logs.
--------------------------------------------------------------------------------Apache Tomcat/5.5.9
然后在看看java.lang.NoClassDefFoundError: org/hibernate/HibernateException
管他是jsp还是applet或者application,都只是通过 SessionFactory 生产出来的 Session 实例来操作的。
网上找本书看吧,比如hibernate_reference.pdf 有好多中文的